What are the side effects of LCHP diets and the risks associated with long-term adherence?

Side effects commonly associated with these diets are weakness, nausea, bad breath, constipation, irritability, light-headedness, and fatigue.
Without fruits, vegetables, and whole grains, high-protein diets lack many vitamins, minerals, phytonutrients, and fiberall dietary factors that protect against an array of ailments and diseases. The major risk associated with long-term adherence to LCHP diets might be the increased risk of heart disease because high-protein foods are also high in fat content. Low carbohydrate intake also produces loss of vitamin B, calcium, and potassium. Potential bone loss can further accentuate the risk for osteoporosis. Long-term adherence to an LCHP diet also can increase the risk for cancer.